K&N SU-4506 High-Flow Air Filter for 2006-2009 Suzuki LT-R450 QuadRacer 450

Vehicle Fitment

• 2006-2009 Suzuki LT-R450 QuadRacer 450 (all variants / 2x4 4-stroke ATV)

Fitment Notes

• Direct replacement for the stock airbox filter - installs into OEM airbox without modification.

Features

• High-flow pleated cotton gauze media for increased airflow and improved engine breathing
• Washable and reusable - reduces recurring filter replacement costs
• Pre-oiled and ready to install out of the box
• Large filtration surface area for high dirt-holding capacity and long service intervals
• Application-specific sealing bead ensures precise, leak-free fit in OEM airbox
• Improves throttle response, acceleration, and overall performance vs stock paper filter
• Durable construction suitable for off-road and dusty conditions
• No jetting or fuel-management changes required for most stock setups

Specifications

• Filter Shape: Round tapered / application-specific design
• Filter Material: Multi-layer oiled cotton gauze
• Base Outside Diameter: 6.125 in (156 mm)
• Top Outside Diameter: 5.125 in (130 mm)
• Height: 3.938 in (100 mm)
• Washable / Reusable: Yes
• Re-oil Amount (after cleaning): approx. 0.85 oz (25 ml)
• Quantity: 1 x Air Filter

Included Components

• 1 x K&N SU-4506 High-Flow Air Filter

Product Description

The K&N SU-4506 High-Flow Air Filter is engineered as a direct-replacement performance upgrade for the 2006-2009 Suzuki LT-R450 QuadRacer 450 ATV. Its pleated cotton gauze media significantly improves airflow to the engine compared to the stock filter, enabling more efficient air intake, better throttle response, and stronger acceleration - even under heavy off-road or dusty conditions. The filter installs easily into the OEM airbox thanks to its application-specific sealing bead, requiring no modifications or special tools.

Designed for durability and long-term use, SU-4506 is washable, reusable, and pre-oiled out of the box, making maintenance straightforward: simply clean, re-oil (≈ 0.85 oz / 25 ml), and reinstall. With a large filtration surface and excellent dust-holding capacity, this filter is ideal for riders who want reliable engine protection, enhanced performance, and extended service intervals - especially in demanding off-road or recreational riding environments.